CAT4004B:Constant Current Programmable LED Driver with 32 Dimming Levels
The CAT4003B and CAT4004B provide respectively three and four matched low dropout current sources to drive LEDs. The CAT400XB requires no external RSET resistor. The LED current is internally set to 25 mA when the device is first enabled. Each LED channel includes an individual control loop allowing the device to handle a wide range of LED forward voltages while still maintaining tight current matching. The EN/DIM logic input supports the device enable and a digital dimming interface for setting the LED channel current with 32 linear dimming levels. LEDs can be powered directly from a Lithium-ion battery due to the low dropout (75 mV at 20 mA) current sinks. Package options are available in the 4-channel tiny 8-pad UDFN 2 mm x 2 mm with a max height of 0.55 mm, and 3- channel in the 6-lead TSOT-23, TSOP and SC-70.
技术特性
- Low Dropout Driver 75 mV at 20 mA
- Dimming via 1-wire EZDimTM Interface
- 3, 4 LED Current Sinks with Tight Matching
- 32 Dimming Levels
- No Switching Noise
- Shutdown Current less than 1 µA
- 25 mA Max LED Current per Channel
- Thermal Shutdown Protection
终端产品
- Mobile Phones
- Digital Cameras
应用
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封装图 PACKAGE DIMENSIONS
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订购信息 Ordering Information
| 产品 |
状况 |
Compliance |
具体说明 |
封装 |
MSL* |
容器 |
预算价格 (1千个数量的单价） |
| 类型 |
外形 |
类型 |
数量 |
| CAT4004BHU2-GT3 |
Active |
|
Constant Current Programmable LED Driver with 32 Dimming Levels |
SC-88-6 / SC-70-6 |
419AD |
1 |
Tape and Reel |
3000 |
$0.3867 |
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